The femur (thigh bone) length seems to hold on to it’s accuracy longer than the other parameters, but after 36 weeks it isn’t foolproof.
The computer in the ultrasound (ignorantly) lumps your bigger baby into the dates of babies that big in the “normal” population.
This may then indicate that your 37-week baby is two weeks overdue!
So in this arithmetic test, the baby sets the curve.
The different types of procedures include: Transvaginal Scans – Specially designed probe transducers are used inside the vagina to generate sonogram images.
Most often used during the early stages of pregnancy.
Although the terms ultrasound and sonogram are technically different, they are used interchangeably and reference the same exam.
There are basically seven different ultrasound exams, but the basic process is the same.
For instance, say you normally have eight and nine pound babies.